Pipe-mold



F. SHIGKLE.

(No Model.)

PIPE MOLD.

No. 289,034. Patented Nov. 27, 1888.

Any"

1519122501 Jzsfiw zeiM NITED STATES PATENT. Fries.

FREDERICK SHICKLE, OF ST. LOUIS, MISSOURI.

PIPE-MOLD.

SPECIFICATION forming part of Letters Patent No. 289,034, dated November 27, 1883.

Application filed July 10, 1883. (No model.)

To all whom it may concern Be it known that I, FREDERICK SHICKLE, of St. Louis, Missouri, have made a new and useful Improvement in Pipe-Molds, of which the following is a full, clear, and exact description, reference being had to the annexed drawings, making part of this specification, in which- Figure l is a top view of the flaskrbottom, half of the socket-coating at the top being in section, to exhibit the means used in bonding the coating; Fig. 2, a vertical section on the line 2 2 of Fig. 1, a portion of the coating at the top being in elevation; Fig. 3, a sectional elevation of the lower end of the core; Fig. 4, a sectional elevation, showing the core in position; and Fig. 5, a detail in section upon an enlarged scale.

The same letters of reference denote the same parts.

This invention relates to that part of the mold which forms the bell of the pipe.

In the present case the pipe A is cast with the bell end downward. The flaskshell' is not shown. B represents the flask-bottom. E represents the core. F represents the socket which receives and supports the core.

The core, flask-shell, and lining are of the customary form and construction. The socket is preferably in one piece with the bottom of the flask, as shown in Figs. 2 and 4, as this facilitates handling this portion of the molding mechanism; but whether in one piece with the flask-bottom or not, the coating has been formed upon the'socket by wrapping the socket with a rope, and then applying thereto the material from which the coating is formed. Such a socket is objectionable, first, because the upper edge of the coating is apt to give away when the metal is poured onto it; and, second, because it is dificult to remove the coating from the socket after the coating has, from the heat of the casting, become hardened thereon. Forming the coating also becomes expensive, comparatively, in that the rope used in its construction cannot be used a second time. The present socket F, externally,

is made conical or tapering. The coating G is extended abovethe upper edge of the socket, and is bonded by means of nails H H, which pass through the coating and are attached to a chain, H, which encircles the socket, and preferably above the level of the upper edge of the socket. This device H H H not only serves to bond the coating, but also, from its position in the coating, materially aids in pre venting the upper edge of the coating from being abraded or broken by the molten metal as it falls into the mold. It can also be used over and over again in the construction of the molds. The coating is extended, preferably at 9, upon the flask-bottom, to prevent the molten metal from coming in contact with the flask-bottom, and that edge of the pipe from becoming chilled. After the pipe has been cast, the coating G, from the tapering form of the socket, can be readily detached therefrom and the device H H H recovered. The coating G and core are relatively so constructed and combined that there is a narrow annular space, M,left between the core and the coating. The corner 0 of the core is made to come below the upper edge of the coating, and the core-bar at o bears upon the socket F. The object is this: If the corner 6 of the core is allowed to come even with the upper edge of the coating, it is liable to be broken away in the casting, and the pipe, in consequence, injured; but by dropping the core slightly below the top of the coating, and allowing the core to be sustained by the socket at e, as de' scribed, the pipe can be cast perfectly, for the core can be readily seated in the socket without abrading it at the corner e, and by causing the core at e to lap the coating there is no liability of the pipe internally being too small in diameter. The metal, in casting, runs into the space M, forming a thin annular fin, which can be readily removed from the pipe.

I claim- 1. The socket-coating G, bonded near its upper edge, for the purpose described.

2. The combination of the tapering socket F and the coating G, bonded near its upper edge.

3. The combination of the socket F, the nails H H H, the chain H, and the coating G, substantially as described.

4. The combination of the socket F, the coating G, and the core E, said coating and core being lapped, as and for the purpose described.

5. The combination of the socket F, the coating G, and the core E, said core and coating being separated by the annular space M, as described.

Witnesses: FREDERICK SHIGKLE.

O. D. MOODY, J. W. SUTHERLAND. 

